biodiversity crisis
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2022 ◽  
Vol 2 ◽  
Author(s):  
Jacob W. Malcom ◽  
Michael Evans ◽  
Jessica Norriss ◽  
Victoria Foster ◽  
Matthew Moskwik

Addressing the biodiversity crisis will mean developing and adopting new resources and methods that effectively improve public conservation efforts. Technologies have a long track record of increasing the efficiency of carrying out time-consuming tasks or even making new feats possible, and if applied thoughtfully, can serve as a key means of strengthening conservation outcomes. Yet technology development sometimes proceeds without clear mechanisms for application and scaling, or key adopters like government agencies are not able to use the technologies. To overcome these discrepancies, we recommend the use of a coproduction model of conservation technology development that starts from detailed knowledge of conservation laws, regulations, policies, and their implementation; identifies choke points in those processes amenable to technological solutions; and then develops those solutions while integrating existing users and needs. To illustrate the model, we describe three tools recently developed to help improve the efficiency and effectiveness of implementing the U.S. Endangered Species Act. We also highlight several outstanding questions and challenges that the broad conservation technology and policy communities may help address.


Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 193
Author(s):  
Peter M. Rudberg ◽  
Timos Karpouzoglou

Damming and water regulation creates highly modified rivers with limited ecosystem integrity and resilience. This, coupled with an ongoing global biodiversity crisis, makes river restoration a priority, which requires water reallocation. Coupled human–natural systems research provides a suitable lens for integrated systems’ analysis but offers limited insight into the governance processes of water reallocation. Therefore, we propose an analytical framework, which combines insight from social–hydrological resilience and water reallocation research, and identifies the adaptive capacity in highly modified rivers as the capacity for water reallocation. We test the framework by conducting an analysis of Sweden, pre- and post-2019, a critical juncture in the governance of the country’s hydropower producing rivers. We identify a relative increase in adaptive capacity post- 2019 since water reallocation is set to occur in smaller rivers and tributaries, while leaving large-scaled rivers to enjoy limited water reallocation, or even increased allocation to hydropower. We contend that the proposed framework is broad enough to be of general interest, yet sufficiently specific to contribute to the construction of middle-range theories, which could further our understanding of why and how governance processes function, change, and lead to outcomes in terms of modified natural resource management and resilience shifts.


2022 ◽  
Vol 1 (1) ◽  
Author(s):  
S. Volis

Continuing wide-scale habitat degradation and species extinctions indicate that existing plant conservation practices are inadequate and new approaches are needed. I briefly summarize the major principles of a previously proposed concept called conservation- oriented restoration and compare it with two other approaches to tackling ecosystems' degradation and biodiversity loss: traditional restoration and species-targeted conservation. I then present my perspective on how this concept can be applied in Central Asia as a possible solution to the regional biodiversity crisis.


eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Michal Motyka ◽  
Dominik Kusy ◽  
Matej Bocek ◽  
Renata Bilkova ◽  
Ladislav Bocak

Conservation efforts must be evidence-based, so rapid and economically feasible methods should be used to quantify diversity and distribution patterns. We have attempted to overcome current impediments to the gathering of biodiversity data by using integrative phylogenomic and three mtDNA fragment analyses. As a model, we sequenced the Metriorrhynchini beetle fauna, sampled from ~700 localities in three continents. The species-rich dataset included ~6,500 terminals, ~1,850 putative species delimited at 5% uncorrected pairwise threshold, possibly ~1,000 of them unknown to science. Neither type of data could alone answer our questions on biodiversity and phylogeny. The phylogenomic backbone enabled the integrative delimitation of robustly defined natural genus-group units that will inform future research. Using constrained mtDNA analysis, we identified the spatial structure of species diversity, very high species-level endemism, and a biodiversity hotspot in New Guinea. We suggest that focused field research and subsequent laboratory and bioinformatic workflow steps would substantially accelerate the inventorying of any hyperdiverse tropical group with several thousand species. The outcome would be a scaffold for the incorporation of further data from environmental sequencing and ecological studies. The database of sequences could set a benchmark for the spatiotemporal evaluation of biodiversity, would support evidence-based conservation planning, and would provide a robust framework for systematic, biogeographic, and evolutionary studies.


2021 ◽  
Vol 28 (1) ◽  
Author(s):  
Megan Youdelis ◽  
Justine Townsend ◽  
Jonaki Bhattacharyya ◽  
Faisal Moola ◽  
J.B. Fobister

Extractive capitalism has long been the driving force of settler colonialism in Canada, and continues to threaten the sovereignty, lands and waters of Indigenous nations across the country. While ostensibly counterposed to extractivism, state-led conservation has similarly served to alienate Indigenous peoples from their territories, often for capitalist gain. Recognizing the inadequacy of the colonial-capitalist conservation paradigm to redress the biodiversity crisis, scholars in political ecology increasingly call for radical, convivial alternatives rooted in equity and justice. Indigenous Protected and Conserved Areas (IPCAs) are one such alternative, representing a paradigm shift from colonial to Indigenous-led conservation that reinvigorates Indigenous knowledge and governance systems. Since the Indigenous Circle of Experts finalized a report in 2018 on how IPCAs could contribute to Canada's conservation targets and reconciliation efforts, an increasing number of Indigenous stewardship initiatives across the country have been declared as IPCAs. These initiatives are assertions of Indigenous sovereignty, inherent rights, and responsibilities to their territories, as well as movements to rejuvenate biocultural conservation. Although Canada is supporting IPCAs through certain initiatives, the country's extractivist development model along with jurisdictional inconsistencies are undermining the establishment and long-term viability of many IPCAs. This paper explores two instances where Indigenous governments have established, or are establishing, IPCAs as novel strategies for land and water protection within long histories of resistance to colonial-capitalist exploitation. We argue that there is a paradoxical tension in Canadian conservation whereby Indigenous-led conservation is promoted in theory, while being undermined in practice. IPCAs offer glimpses of productive, alternative sustainabilities that move away from the colonial-capitalist paradigm, but are being challenged by governments and industries that still fail to respect Indigenous jurisdiction.


2021 ◽  
pp. 215-234
Author(s):  
Norman Johnson
Keyword(s):  

Geology ◽  
2021 ◽  
Author(s):  
A.D. Muscente ◽  
Rowan C. Martindale ◽  
Anirudh Prabhu ◽  
Xiaogang Ma ◽  
Peter Fox ◽  
...  

Ecological observations and paleontological data show that communities of organisms recur in space and time. Various observations suggest that communities largely disappear in extinction events and appear during radiations. This hypothesis, however, has not been tested on a large scale due to a lack of methods for analyzing fossil data, identifying communities, and quantifying their turnover. We demonstrate an approach for quantifying turnover of communities over the Phanerozoic Eon. Using network analysis of fossil occurrence data, we provide the first estimates of appearance and disappearance rates for marine animal paleocommunities in the 100 stages of the Phanerozoic record. Our analysis of 124,605 fossil collections (representing 25,749 living and extinct marine animal genera) shows that paleocommunity disappearance and appearance rates are generally highest in mass extinctions and recovery intervals, respectively, with rates three times greater than background levels. Although taxonomic change is, in general, a fair predictor of ecologic reorganization, the variance is high, and ecologic and taxonomic changes were episodically decoupled at times in the past. Extinction rate, therefore, is an imperfect proxy for ecologic change. The paleocommunity turnover rates suggest that efforts to assess the ecological consequences of the present-day biodiversity crisis should focus on the selectivity of extinctions and changes in the prevalence of biological interactions.


The Holocene ◽  
2021 ◽  
pp. 095968362110604
Author(s):  
Carolina Senn ◽  
Willy Tinner ◽  
Vivian A Felde ◽  
Erika Gobet ◽  
Jacqueline FN van Leeuwen ◽  
...  

Past vegetation and biodiversity dynamics, reconstructed using palaeoecological methods, can contribute to assessing the magnitude of the current biodiversity crisis and anticipating future risks and challenges. Among the different palaeoecological techniques, pollen analysis is probably the most widely used to reconstruct vegetation and plant diversity changes through time. Such reconstructions demand robust and comprehensive calibration studies addressing the pollen representation of extant vegetation to be sound. However, calibration studies are rare in the Mediterranean biodiversity hotspot, particularly regarding plant diversity. Here, we contribute to filling this gap by investigating the modern pollen signature of Mediterranean vegetation across a large environmental gradient in northern Greece. At each sampling site ( n = 61), we quantitatively compared the composition and diversity of plant (vegetation surveys) and pollen assemblages (moss/topsoil samples) using numerical techniques. Further, we compared these terrestrial pollen assemblages with those from lake sediment surface samples of the same region. We found an overall good match between plant and pollen assemblages, with maquis and mixed deciduous forest displaying particularly distinct pollen signatures. In contrast, the high regional importance of pines and oaks and their large pollen production blurred the pollen representation of other forested vegetation types and of shrublands and grasslands. Plant and pollen richness and their evenness showed similar declining trends with increasing altitude, but plant and pollen evenness bore a better match than richness. A more detailed vegetation-specific view on the data suggests that pine pollen seriously affected pollen richness and evenness in most of the pine-dominated stands. Lastly, our results suggest a rather straightforward application of vegetation-pollen relationships from moss/topsoil samples to interpret pollen assemblages from lakes in Mediterranean settings.


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